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Trong Oracle 11g làm thế nào để bạn tính thời gian cho dữ liệu trung bình hàng giờ giữa hai ngày?

Sử dụng dữ liệu mẫu của bạn - dữ liệu đó không có dữ liệu của một giờ đầy đủ, vì vậy tôi đã thực hiện mức trung bình có trọng số mỗi phút.

Bạn chưa chỉ định những gì bạn muốn làm ở các ranh giới, vì vậy tôi đã lấy giá trị trung bình có trọng số của các giá trị ngay trước và sau đó.

SQL Fiddle

Thiết lập lược đồ Oracle 11g R2 :

CREATE TABLE TEST ( Acronym, Date_Time, Value ) AS
          SELECT '32-PRESS', TIMESTAMP '15-01-01 00:00:07.120000000', 63.7363 FROM DUAL
UNION ALL SELECT '32-PRESS', TIMESTAMP '15-01-01 00:00:17.088000000', 64.5604 FROM DUAL
UNION ALL SELECT '32-PRESS', TIMESTAMP '15-01-01 00:00:27.864000000', 66.3004 FROM DUAL
UNION ALL SELECT '32-PRESS', TIMESTAMP '15-01-01 00:00:45.080000000', 66.804 FROM DUAL
UNION ALL SELECT '32-PRESS', TIMESTAMP '15-01-01 00:00:55.056000000', 67.4908 FROM DUAL
UNION ALL SELECT '32-PRESS', TIMESTAMP '15-01-01 00:01:11.384000000', 66.9872 FROM DUAL
UNION ALL SELECT '32-PRESS', TIMESTAMP '15-01-01 00:01:30.424000000', 67.4451 FROM DUAL
UNION ALL SELECT '32-PRESS', TIMESTAMP '15-01-01 00:01:40.408000000', 67.9487 FROM DUAL
UNION ALL SELECT '32-PRESS', TIMESTAMP '15-01-01 00:01:50.408000000', 68.6813 FROM DUAL
UNION ALL SELECT '32-PRESS', TIMESTAMP '15-01-01 00:02:01.304000000', 68.1777 FROM DUAL
UNION ALL SELECT '32-PRESS', TIMESTAMP '15-01-01 00:02:11.304000000', 67.1245 FROM DUAL
UNION ALL SELECT '32-PRESS', TIMESTAMP '15-01-01 00:02:21.264000000', 66.5293 FROM DUAL
UNION ALL SELECT '32-PRESS', TIMESTAMP '15-01-01 00:02:31.232000000', 65.4762 FROM DUAL
UNION ALL SELECT '32-PRESS', TIMESTAMP '15-01-01 00:02:45.736000000', 65.0183 FROM DUAL
UNION ALL SELECT '32-PRESS', TIMESTAMP '15-01-01 00:02:59.312000000', 64.5604 FROM DUAL
UNION ALL SELECT '32-PRESS', TIMESTAMP '15-01-01 00:03:14.712000000', 64.1026 FROM DUAL;

Truy vấn 1 :

WITH temp AS (
  SELECT  ACRONYM,
          DATE_TIME,
          VALUE
  FROM    TEST
  UNION
  SELECT  ACRONYM,
          TO_TIMESTAMP( TO_CHAR( DATE_TIME, 'YYYY-MM-DD HH24:MI' ), 'YYYY-MM-DD HH24:MI' ),
          NULL
  FROM    TEST
  GROUP BY
          ACRONYM,
          TO_TIMESTAMP( TO_CHAR( DATE_TIME, 'YYYY-MM-DD HH24:MI' ), 'YYYY-MM-DD HH24:MI' )
  UNION
  SELECT  ACRONYM,
          TO_TIMESTAMP( TO_CHAR( DATE_TIME, 'YYYY-MM-DD HH24:MI' ), 'YYYY-MM-DD HH24:MI' ) + INTERVAL '1' MINUTE,
          NULL
  FROM    TEST
  GROUP BY
          ACRONYM,
          TO_TIMESTAMP( TO_CHAR( DATE_TIME, 'YYYY-MM-DD HH24:MI' ), 'YYYY-MM-DD HH24:MI' )
  ORDER BY
          1,2
),
temp2 AS (
  SELECT  ACRONYM,
          DATE_TIME,
          COALESCE(
            VALUE,
            COALESCE(
              LAG( VALUE ) OVER ( PARTITION BY ACRONYM ORDER BY DATE_TIME ),
              LEAD( VALUE ) OVER ( PARTITION BY ACRONYM ORDER BY DATE_TIME )
            )
            +
            (
              COALESCE(
                LEAD( VALUE ) OVER ( PARTITION BY ACRONYM ORDER BY DATE_TIME ),
                LAG( VALUE ) OVER ( PARTITION BY ACRONYM ORDER BY DATE_TIME )
              )
              -
              COALESCE(
                LAG( VALUE ) OVER ( PARTITION BY ACRONYM ORDER BY DATE_TIME ),
                LEAD( VALUE ) OVER ( PARTITION BY ACRONYM ORDER BY DATE_TIME )
              )
            )
            *
            EXTRACT( SECOND FROM ( DATE_TIME - LAG( DATE_TIME, 1, DATE_TIME ) OVER ( PARTITION BY ACRONYM ORDER BY DATE_TIME ) ) )
            /
            EXTRACT( SECOND FROM (
              LEAD( DATE_TIME, 1, DATE_TIME ) OVER ( PARTITION BY ACRONYM ORDER BY DATE_TIME )
              -
              LAG( DATE_TIME, 1, DATE_TIME ) OVER ( PARTITION BY ACRONYM ORDER BY DATE_TIME )
            ) )
          ) AS VALUE,
          LEAD( DATE_TIME ) OVER ( PARTITION BY ACRONYM ORDER BY DATE_TIME ) AS NEXT_DATE_TIME
  FROM    temp
)
SELECT  ACRONYM,
        TO_DATE( TO_CHAR( DATE_TIME, 'YYYY-MM-DD HH24:MI' ), 'YYYY-MM-DD HH24:MI' ) AS DATE_TIME,
        SUM( VALUE * EXTRACT( SECOND FROM ( NEXT_DATE_TIME - DATE_TIME ) ) ) / 60 AS VALUE
FROM    temp2
WHERE   NEXT_DATE_TIME IS NOT NULL
GROUP BY
        ACRONYM,
        TO_DATE( TO_CHAR( DATE_TIME, 'YYYY-MM-DD HH24:MI' ), 'YYYY-MM-DD HH24:MI' )
ORDER BY
        1,2

Kết quả :

|  ACRONYM |                 DATE_TIME |             VALUE |
|----------|---------------------------|-------------------|
| 32-PRESS | January, 01 0015 00:00:00 | 65.43946117333333 |
| 32-PRESS | January, 01 0015 00:01:00 | 67.56109262835211 |
| 32-PRESS | January, 01 0015 00:02:00 | 66.32093658633383 |
| 32-PRESS | January, 01 0015 00:03:00 | 64.20983764043636 |

CHỈNH SỬA

SQL Fiddle

Thiết lập lược đồ Oracle 11g R2 :

CREATE TABLE POINTS ( RECNM NUMBER, ACRONYM VARCHAR2(20) );
INSERT INTO POINTS  VALUES(1136, '32-PRESS');
INSERT INTO POINTS  VALUES(1138, 'OTHER_POINT');

CREATE TABLE HST ( RECNM NUMBER, TIME TIMESTAMP, VALUE NUMBER );
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:00:00',63.3);
INSERT INTO HST  VALUES(1138, TIMESTAMP '15-01-01 00:00:00',0.0);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:00:07',63.7);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:00:17',64.6);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:00:28',66.3);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:00:45',66.8);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:00:55',67.5);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:01:11',67.0);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:01:30',67.4);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:01:40',67.9);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:01:50',68.7);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:02:01',68.2);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:02:11',67.1);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:02:21',66.5);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:02:31',65.5);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:02:46',65.0);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:02:59',64.6);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:03:15',64.1);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:03:25',63.2);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:03:35',62.7);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:04:05',62.2);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:04:32',61.8);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:05:40',61.3);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:05:55',60.8);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:10:20',60.3);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:10:38',60.9);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:10:48',61.3);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:10:58',61.8);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:11:27',62.3);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:13:54',61.8);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:14:10',61.4);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:14:41',60.9);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:15:18',61.4);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:15:51',60.9);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:16:19',60.4);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:16:32',59.9);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:17:04',59.4);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:17:27',59.9);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:17:37',59.4);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:17:58',59.0);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:18:22',59.4);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:18:50',59.9);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:19:00',60.3);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:19:25',60.8);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:19:34',61.4);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:19:45',62.1);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:19:55',62.5);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:20:30',63.0);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:20:51',63.5);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:21:03',63.9);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:22:04',64.4);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:22:28',64.8);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:23:17',64.4);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:23:27',63.9);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:24:31',63.4);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:26:06',63.0);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:27:20',62.5);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:27:30',61.9);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:28:08',62.4);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:28:37',62.0);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:29:21',62.5);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:29:38',62.9);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:31:27',62.5);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:32:01',62.0);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:32:25',62.5);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:35:07',62.9);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:35:56',62.5);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:36:06',62.0);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:36:59',61.5);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:39:31',62.0);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:40:12',61.5);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:40:22',60.9);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:40:35',60.5);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:40:55',60.0);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:41:22',60.5);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:41:46',60.1);
INSERT INTO HST  VALUES(1136, TIMESTAMP '15-01-01 00:42:31',60.6);

Truy vấn 1 :

WITH inputs AS (
  SELECT RECNM,
         TIMESTAMP '15-01-01 00:00:00' AS start_time,
         TIMESTAMP '15-01-01 00:40:00' AS end_time
  FROM   POINTS
  WHERE  ACRONYM = '32-PRESS'
),
all_minutes AS (
  SELECT RECNM,
         start_time + (LEVEL-1)/24/60 AS time
  FROM   inputs
  CONNECT BY
         LEVEL - 1 <= EXTRACT( MINUTE FROM end_time - start_time )
),
all_times AS (
  SELECT  TIME,
          VALUE,
          1 AS HAS_VALUE
  FROM    HST h
          INNER JOIN inputs i
          ON (     h.RECNM = i.RECNM
               AND h.TIME BETWEEN i.start_time
                          AND     i.end_time )
  UNION ALL
  SELECT  TIME,
          NULL,
          0
  FROM    all_minutes
  ORDER BY 1, 2 NULLS FIRST
),
lag_lead_ignore_nulls AS (
  SELECT TIME,
         VALUE,
         COUNT( VALUE ) OVER ( ORDER BY TIME ASC, VALUE ASC NULLS FIRST ) AS LAG_GRP,
         COUNT( VALUE ) OVER ( ORDER BY TIME DESC, VALUE DESC NULLS LAST ) AS LEAD_GRP
  FROM   all_times
),
lag_lead_values AS (
  SELECT  TIME,
          VALUE,
          FIRST_VALUE( TIME  ) OVER ( PARTITION BY LAG_GRP  ORDER BY VALUE ASC NULLS LAST ) AS PREV_MEASURED_TIME,
          FIRST_VALUE( VALUE ) OVER ( PARTITION BY LAG_GRP  ORDER BY VALUE ASC NULLS LAST ) AS PREV_MEASURED_VALUE,
          FIRST_VALUE( TIME  ) OVER ( PARTITION BY LEAD_GRP ORDER BY VALUE ASC NULLS LAST ) AS NEXT_MEASURED_TIME,
          FIRST_VALUE( VALUE ) OVER ( PARTITION BY LEAD_GRP ORDER BY VALUE ASC NULLS LAST ) AS NEXT_MEASURED_VALUE,
          LEAD( TIME ) OVER ( ORDER BY TIME ASC ) AS NEXT_TIME
  FROM    lag_lead_ignore_nulls
),
interpolated_values AS (
  SELECT CAST( TIME AS DATE ) TIME,
         COALESCE(
           VALUE,
           PREV_MEASURED_VALUE
           + ( NEXT_MEASURED_VALUE - PREV_MEASURED_VALUE )
           * (
               60 * EXTRACT( MINUTE FROM TIME - PREV_MEASURED_TIME )
               + EXTRACT( SECOND FROM TIME - PREV_MEASURED_TIME )
             )
           / (
               60 * EXTRACT( MINUTE FROM NEXT_MEASURED_TIME - PREV_MEASURED_TIME )
               + EXTRACT( SECOND FROM NEXT_MEASURED_TIME - PREV_MEASURED_TIME )
             )
         ) AS INTERPOLATED_VALUE,
         60 * EXTRACT( MINUTE FROM NEXT_TIME - TIME )
         + EXTRACT( SECOND FROM NEXT_TIME - TIME ) AS DURATION
  FROM lag_lead_values
)
SELECT TRUNC( TIME, 'MI' ) AS TIME,
       SUM( INTERPOLATED_VALUE * DURATION ) / SUM( DURATION ) AS TWA,
       SUM( DURATION ) AS TOTAL_DURATION
FROM   interpolated_values
WHERE  INTERPOLATED_VALUE IS NOT NULL
GROUP BY TRUNC( TIME, 'MI' )
ORDER BY TIME ASC

Kết quả :

|                      TIME |                TWA | TOTAL_DURATION |
|---------------------------|--------------------|----------------|
| January, 01 0015 00:00:00 |  65.38833333333333 |             60 |
| January, 01 0015 00:01:00 |  67.56302083333334 |             60 |
| January, 01 0015 00:02:00 |  66.30575757575758 |             60 |
| January, 01 0015 00:03:00 |  63.48385416666667 |             60 |
| January, 01 0015 00:04:00 |  62.02027777777778 |             60 |
| January, 01 0015 00:05:00 |  61.45441176470588 |             60 |
| January, 01 0015 00:06:00 |  60.79056603773585 |             60 |
| January, 01 0015 00:07:00 | 60.677358490566036 |             60 |
| January, 01 0015 00:08:00 |  60.56415094339623 |             60 |
| January, 01 0015 00:09:00 | 60.450943396226414 |             60 |
| January, 01 0015 00:10:00 |  60.62924528301887 |             60 |
| January, 01 0015 00:11:00 |  62.09051724137931 |             60 |
| January, 01 0015 00:12:00 |  62.18775510204082 |             60 |
| January, 01 0015 00:13:00 |  61.96530612244898 |             60 |
| January, 01 0015 00:14:00 |  61.28333333333333 |             60 |
| January, 01 0015 00:15:00 | 61.252027027027026 |             60 |
| January, 01 0015 00:16:00 |  60.27410714285714 |             60 |
| January, 01 0015 00:17:00 |  59.47416666666667 |             60 |
| January, 01 0015 00:18:00 |  59.34888888888889 |             60 |
| January, 01 0015 00:19:00 |              61.06 |             60 |
| January, 01 0015 00:20:00 |  62.86071428571429 |             60 |
| January, 01 0015 00:21:00 |             63.895 |             60 |
| January, 01 0015 00:22:00 |  64.61114754098361 |             60 |
| January, 01 0015 00:23:00 |  64.16431972789115 |             60 |
| January, 01 0015 00:24:00 |  63.52513020833333 |             60 |
| January, 01 0015 00:25:00 |  63.27789473684211 |             60 |
| January, 01 0015 00:26:00 | 63.002526315789474 |             60 |
| January, 01 0015 00:27:00 | 62.245045045045046 |             60 |
| January, 01 0015 00:28:00 |  62.23263157894737 |             60 |
| January, 01 0015 00:29:00 |  62.56314393939394 |             60 |
| January, 01 0015 00:30:00 |  62.81926605504587 |             60 |
| January, 01 0015 00:31:00 | 62.544587155963306 |             60 |
| January, 01 0015 00:32:00 |  62.29191176470588 |             60 |
| January, 01 0015 00:33:00 |  62.58641975308642 |             60 |
| January, 01 0015 00:34:00 |  62.73456790123457 |             60 |
| January, 01 0015 00:35:00 |  62.87131687242798 |             60 |
| January, 01 0015 00:36:00 |  62.02166666666667 |             60 |
| January, 01 0015 00:37:00 |  61.50328947368421 |             60 |
| January, 01 0015 00:38:00 |  61.70065789473684 |             60 |
| January, 01 0015 00:39:00 |  61.94731359649123 |             60 |


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